prospectiveusc

I am looking to apply to USC for a Master's in Health Administration. I am currently studying to get my bachelor's in Health Admin and would really like some insight on the application process and how competitive USC's Price School of Public Policy is. As far as I know, I don't believe this program is impacted (or at least not yet). Some questions are: how high should my GPA be? Do they pay attention to volunteer work (specifically at a hospital, as it goes hand in hand with the major), and how important GRE scores are? Also, what steps could be taken to better my chance of getting in? Any other helpful information would be greatly appreciated... Thanks in advance!